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Finding the Fourth Proportional to 85,502.46, 128,253.70 and 22,322.40

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Solution

The fourth proportional to 85,502.46, 128,253.70 and 22,322.40 is: 33,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,502.46 : 128,253.70 = 22,322.40 : x
  2. Step 2: Convert to fraction form
    85,502.46/128,253.70 = 22,322.40/x
  3. Step 3: Cross multiply
    85,502.46x = 128,253.70 × 22,322.40
  4. Step 4: Simplify right side
    85,502.46x = 2,862,930,392.88
  5. Step 5: Solve for x
    x = 2,862,930,392.88/85,502.46
  6. Step 6: Final answer
    x = 33,483.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.